Do you have to fill out your SSN on Tenant/Landlord表格? if it is, you suppose to report rental income in schedule E.
老人自己要填哪种税表?if it is under certain limit (check with IRS), they no need to file tax return. Also, they can't claim the rent paid to you as deduction.
As far as whether there is a special form or procedure for 老人报税, then I don't know.